Humidity regulator



May 17, 1927.

A. E. KRICK HUMIDITY REGULATOR wal/14;

mllllllllllllllll! y l, ATTORNEY.

124 ff/M5747' 39 @ff/Wifi? May 17,1927. 1,629,107

A. E. KRICK HUMIDITY REGULATOR Filed oct. 22. 192s s sheets-sheet s W' ATTORNEY.

Patented May 17, 1927.

- UNITED STATES J1,629,107 .PATENT ori-Ica ARTHUR E. KRICK, OF DANVILLE, INDIANA, ASSIGNOR TO THE HUMIDITY CONTROL COMPANY, OF INDIANAPOLIS, INDIANA, A CORPORATIQN OF INDIANA.

HUMIDITY REGULATOR.

Application filed. October 22, 1923. Serial No. 669,910.

It. is the object of my 'invention to im.

prove and accelerate kiln-drying, with especial reference to the drying of lumbei.

More specifically', it is the object of this` present invention to improve and develop the control apparatus shown in my co-pending lapplication Serial` No. `551,058, filed April 10, 1922, for carrying out in a preferred way the process of kiln-drying set forth in my co-pcnding application Serial No. 671,111, filed October 27, 1923;.which process contemplates kiln-drying, and particularly the kiln-drying of lumber` by alternately decreasing and increasing the relative hulnidty of the drying air between wide limits.

It is a further object to produce a control apparatus, especially for use in the control of kiln-drying, which will have a snap action on the control member, as on al valve or valve-stem, will act to hold such control member in either position substantially until it is desired to move it to the other position, and will do so by' floating spring-actuated members which act on4 the control member without exerting side-pressure thereon.

The accompanying drawings illustrate my invention: Fig. 1 is a transverse section through a dry-kiln equipped with my control apparatus; Fig. 2 is a side elevation of my control apparatus, with some parts broken away or in section, showing actuation by Wet-bulb control only; Fig. 3 and Fig. 4 are ragmental views similar to the middle portion of Fig. 2 but showing the movable parts in intermediate positions in the upward and downward movement re- Spectively of the actuating member; Fig. 5 is a transverse section 'substantially on the line 5 5 of Fig. 4; Fig. 6 is an elevation of th device on a smaller scale than Fig. 2, so that the complete ydevice may be shown; Figa 7 is a view similar to Fig. 2, on a somewhat smaller scale, showing actuation by.

r joint wet-bulb and dry-bulb control. as is also illustrated in Fig. 1: and Fig. 8 is an elevation, in partial-section. of my control apparatus arranged to exert its controlling action through a pilot valve.

Thedry kilnv 10 in which the conditions are controlled may be of any desired type, with any suitable heating means 11 and with any suitable air-humid'ifying means 12, and with any suitable arrangements for supporting the lumber or other material to be dried, such'as the tracks 13 for supporting trucks which carry such lumber. As shown, both the heating means ,11 and the air`humidifying means 12 are steam coils. .They are shown below the tracks 13, but this isimmaterial; and-the air-humidifying coils are shown as being in. part coils. located in water in a water-tank 14, to produce evaporation of water from such tank, and in part as steam-spray coils, though either .type of air-ln'imidifying coils may be used alone, or

other types oi' air-humidifying means may be used instead. The steam for both heating and humidication is shown as being -sup-y plied from aT main steam-supply line 15, which is branched to provide a supply line 16 leading to the heating c oils ll'and asup- .ply line 17leading to the air-humidifyillg coils 12. The details of the kiln and of the heating and humidifying means thereof are not part of my presenti invention, land may be anything` desired; and are shown to exf emplify the application of thev controller which vis the subject-matterpof this present invention. a

In the supply line 16 to the heating coils 11 is a control valve 20, which I prefer shall be automatically controlled to maintain a definite dry-bulb temperature within the kiln, usually a uniform temperature at least for a given period. To obtain this, the heatcontrol valve 20 is operated by a fluid-pressure motor-lnember 2l connected by a pipe rises in the. kiln, the vapor-pressure-developed in the thermo'itat 23 also-rises t0- cause the" motor-member 21 to move .the valve 20 toward closed position, to cut down the supply of heating steam to, the heating coils 11; while ifthe temperature falls the reverse series of actions takes place,to increase the supply of steam to the heating coils 11. The motor-member 21 and valve 20 are .conveniently provided with suitable adjusting means. such as an adjustable weight 24. by which the temperature which' is maintained in the-kiln may be varied from time to time, as lthe drying proceeds.

In the supply line 17'to the air-humiditying means 12 is a control valve 80. It is to 'this valvef 30 that the control apparatus valve is merely incidental to this, so far as my present invention is concerned, as

the control of the heat merely assists in the control of the relative humidity.

I have shown-the valve as a balanced valve, having a twin valve-member 3l mov-l 'by a stop 29 against which a central boss on the upper valve-disk 31 may abut. The valve-member 31 has a valve-stein 33, which is connected through a lost-motion connection 34to a shifter rod 35. This lostinoton connection will be discussed more fully later. The shifter rod 35 is controlled in response to variations in relative-humidity within the kiln -10 to open the valve 30 when the relative-'humidit drops to a certain low value, say 30%, an to close such valve 30 when`the relative humidity rises to a certain high value, say 98%, but to be without effect on the valve for intermediate relatively slow, and the rise. relatively rapid.`

The shifter rod 35 may be operated in response to variations in wet-bulb temperature alone.' as indicated in Fig. 2, or` in response to variations both in wet-bulbtemperature -and in dry-bulb temperature, as illustrated in Figs. 1 and 7. The latter form is preferable when there is no automatic control of' the dry-bulb temperature of the kiln by the valve 20; but when the dry-bulb temperature of theA kiln is automaticall controlled by the valve 20 as already explained, sothat the variations in dryfbulbftemperature within the kiln are relatively slight over a given Iii) period,`it. is ordinarily unnecessary to use the dry-bulb temperature'for assisting in the control of the movements ofthe shifter rod 35. so that in such cases I prefer the simpler arrangement shown in Fig. 2 where the- `inovements of the shifter rod 35 are obtained wholly by variations in wet-bulb teinperature. v a

In either case, the shifter rod. 35 is provided with' a `thrust-plate 36, which is pressed downward by a fluid-pressure ex pansible motor-member 38 connected by a pipe 40 to a wet-bulb vapor-pressure thermostat -12 located at a desired point in the wick 43 which overlies such wet-bulb theri'nostat and dips into water maintained at a constant level in a water-tank 44 by a suitable float-valve 45. If the shifter rod is also jointly controlled by dry-bulb temperature,

as indicated in Figs. 1 and 7, a second fluidpressure expansible motor-member 37 acts upwardly on the thrust-plate`36, in opposition to the motor-member 38; which second. motor-member 37 is connected by a pipe 39 to a dry-bulb vthermostat 41 also located `Within the kiln 10.

The shifter rod 35 is connected to a lever 46, suitably mounted on a fixed pivot 47. The lever 46 carries a normally fixed but adjustable weight 48, for adjusting in common the points at which the valve operates and also carries a shifting weight 49 which is arranged to slidealong the lever 46 between two stops 50 and 51, shown as provided with butfer springs to cushion the stopping ofthe shifting weight 49. T o re` duce the sliding friction, theweight 49 is preferably carried by rollers 52 which travel on the upper face of the lever 46. The stops* 50 and 51 may be adjusted along the `lever 46, to control separately the points of high-humidity and low-humidity at which the valve operates; and while in the -arrangement shown iii Figs. 1,'2, and 6 such adjustment is manual, the stops being provided with set-screws 53 by which they are clamped in adjusted-position, my invention is not limited to such manual adjustment, and in my aforesaid co-pen'ding application lol) Serial' No. 551,053 I show an arrangement v for automatically varying the position lot these stops.

The apparatus as so far described does not `differ from that set forth in my aforesaid application Serial No. 551,053. The difference which constitutes the basis for this present application resi-des primarily in the inter-connection between the shifterrod 35 and-fthevalve-stem 33, and in theparts asso ciated therewith for obtaining the desired' movements of the valve andw-'alvc-stcm; and

ieo

'ments 100 and 101, either or both of which may be adjustable, between which plays a finger 102 carried by the shifter rod 35. The space between the two abutments 100 and 101 is materially greater than the thickness of the finger' 102, so that the lost-motion of the connection will be provided thereby.-

Two toggle-arms 103 and 104 are pivoted in common at their adjacent ends on the` vis adjustable by screw-and-slot connections 110 along the arm 108. to varv the point in the movement of the toggle-arm 104 at whchv the latter comes into line with the togglearm 103. The togglefarm 104 is connected by a link 111 to one end of a lever 112, the other end of which lever is connected to the shifter rod o r to the finger 102to the finger 102 as shown-by a pivot-pin 113. The lever 112 is pivoted at an intermediate point to the lower end of a swinging Varm 114, the upper end of which is pivotally hung .from a suitable support 115 on the frame'of the controller. y

In'operation, assume thatv the parts are as shown in fulllines in Fig. 2, with the valve 30 open, so that humidifying steam is being supplied to the dryfkiln. As-such steam is supplied, the relative humidity of 10 rises.

the air in the kiln is raised, which causes the wet-bulb temperature of such air to rise. This rise causes the production of a, greater pressure in the wet-bulb thermostat 42, which pressure yis communicated to the motor-member 38 to cause it to exert a' greater downward thrust on the thrust-plate 36. This causes the shifter rod 35 to move downward as the relative humidity in the kiln This action occurs whether `or not the motor-member 38 is opposed by another motor-member 37. As the thrust plate-36 and shifter rod 35 are thus pushed downward, the right-handv end of the levery 46 is. gradually swung downward, to cause the lever 46 tov pass through the horizontal position to a position in which it slants the other way. Shortly after the lever-46 has passed through the horizontal, the shifting weight 49 is moved by gravitv inward along such lever 46, or from the stop 50 to the stop 51. Such movement lessens the mechanical advantage of such shifting weight, and thus relatively increases the mechanical advan tage of the counterweight 48 and of the motor-member 38 on the lever 46, so that they may act to move vsuch lever 46 more rapidly than at first. In addition to these things. y

the downward movement of the `shifter rod 35 upon the increase in relative humidity moves the finger 102 away from the abutment 101 toward the abutment y100 on the valve-stem 33. to take up .the lost-motion of the connection. As tl1e-finger 102 moves downward, it carries the pivot-pin 113 with it, to swing upward the right-hand end of the lever 112 and the right-hand end of the toggle-arm 104, to move the parts from the position shown in full lines in Fig. 2 through the position shown in Fig. 3 to the position shown in dotted lines in Fig. 2. In Fig. 3 the parts are shown. with the lost-motion above referred to taken up, and the linger 102 against the abutment 100. As the downward movement of the shifter rod 35- continues beyond the position shown in Fig. 3,

vthe continued upward movement of the right-hand end of the lever 112 is now accompanied by a-"pushing' downward of the pivot-pin 105 to accelerate such upward movement of the right-hand end of the toggle-arm' 104 and to cause an upward movement of the left-hand end of the toggle-arm 103. This soon brings the two toggle-,arms into line, and then out of line again in the other direction; whereupon the spring 106 acts to swing the outer ends of the two toggle-- arms 103 and 104 farther upward, to depress the pivot-pin 105 and thevalve-stern 33 andl thus to assist in seating the valve disks 31 on their seats 32.- The parts are preferably adjusted so that the yshifting ofthe weight 49 and the passing of the toggle-arms 103 and 104 through alinement occur at about the same-time; though exact simultaneityyin these two actions is not necessary. Until the downward movement of the shifter rod v35 has passed beyond the point shown in Fig.'` 3, the spring -106 inV its action on the toggle-arms 103 and 104 serves to hold the valve 30 wide-open, and prevents it from jarring closed or from being carried toward or to closed position by the action of the steam; but shortly after the position shown in Fig. 3 has been passed the combined effects of the spring 106 and the shifting ofthe we1ght49 actl to cause the closing of the` valve. and the spring 106 then servesto hold the valve firmly seated. l

The closing of the valve 30 shuts ofi' the supply of humidifying steam to the kiln. In consequence, for a considerable period thereafter, the relative humidity in the kiln slowly decreases; whereas the rise-in relative humidity just described was relatively rapid.

As such relative humidity thus decreases,

the pressure developed inthe wetsbulb therf mostat 42 also decreases, so that the motormember 38 exerts less'v downward .pressure 130 on the thrust-plate 36. In consequence, such thrust-plate is gradually moved upward, un-

. which 'shows the parts with the linger 102 engaging the abutment 101. During this time thespring 106 has continuously held the valve disks 31 on their seats 32. As the upward movement of the shifter' rod 35 and finger 102 now continues, .both outer ends ofthe toggle-arms103 and 104 move down- Cil ward, inlo and past aliued position, whereupon the spring 106 begins to operate in the other direction on the valve-stem 33, and tends to open such valvei which opening'of the valveit. assists in. In the meantime the left-hand end of the lever 46 has been swingreceives the lever 46.

ing downward, to and'through horizontal position; and the shifting weight 49-rolls downward'an'd outward on the' lever 46, at

about the time the spring '106 begins to act upwardly on the valve-stem 33. This shifting increases the mechanical advantage of such weight, so that thereupon the/opening ot the valve proceeds relatively lquickly, to admit steam for humidifying theJ dry-kiln.

The cycle-above described is repeated as occasion requires, throughout the drying period of the kiln.

In the. actions described, the valve-stem 33 is acted on only longitudinally. The various links and levers, with the. spring I 106, are so designed that they exert no trans verse force on such valve-stem, and thus they leave the valve-stem free for its longitudinal movement when the time for that arrives. In other words, the toggle 1'03-104-106 is a floating toggle; and the vlever 112 is a floating lever, because ot the swinging supports provided by the arms 108 and 114 and the link 111. This makes for free operation, and for accuracy infoperation.

In order to adjust the point in the movement where the "shifting of 'the weight 49 occurs. I preferably provide the adjusting mechanism shown in the upper part ot1 Fig.

I do not pivot thf` lever 46 directly on the pivotin 47, but on such pivot-pin I mount a tulcrum sleeve 120, whichloosely The lever.46 has a, pivotal connecion 121 to the fulcrum sleeve 120 near one end ot' the latter, and may be ahngularly adjusted on such pivotal connecuon by opposed adjusting screws 1227pro-l vided in such sleeve near the othenend thereof and acting on the upper and lower edges of the lever 46. By different settings of the screws 122, it is possible to set the lever 46 in a horizontal position for any point throughout quite a range of the movement of the thrust-plate 36.

Further, by providing the sleeve 120 separate from the lever 46, it becomes possible to reverse their relative positions if that is desired in mounting ,the instrument. Not only can the relative positions of the sleeve 120 and the lever 46 be reversed, but the sleeve 120 may be reversed in its mounting l relationihips ot' the parts,l as may be most convenient in the particular location; and is also of assistance in installing iny case'it is deL-" red to nvertlthe whole controller, as may be done. The. controller works either upright'or inverted, and in either case it works with the pivot-pin 47 in either set of ears 124, and with the shifting weight 49 on either side of the sleeve 120; which makes eight possible positions of installation. In-Y deed, so long as the lever 46 is arranged to swing in a substantially vertical plane, it is impossible to assemble the'parts in any of these eight possible positions. without obtaining an operable assembly which acts as above described. For none of these eight positions is -it necessary that the' plane of movement of the lever 46, the plane of movement of the toggle 103--104-106, and the directions in which the fluid-supply and fluid-discharge pipes extend from the control valve, bear any-specific relation to each other, and the relations of these things among themselves lnay ,be varied as desired to suit the conditions encountered.

Further, the control valve which the controlling apparatus operates need not be the main controlvalve, although it is so shown inthe figures above described. Instead, the

lill".

main humidity control valve may be controlled by any suitable interposed pilot `mechanism, which .in turn is operated by the` controlling apparatus. v

One such arrangement is shown 1n Fig. 8.

There the cont-rolling apparatus directly i operates a pilot valve 130, which by its movements controls a, supply of' power to suitable power-operated mechanisritfor the Vmain valve 30. This arrangement may take various forms, Aand only one example is shown. The controlling apparatus proper 'is that already described, and may be governed in either, way already described, either by wetbulb variations alone or by wet-bulb and .dry-bulb variations jointly. The valve-stem which lead to the two ends of a cylinder 135.

in which there is a piston 136 attached to the stem 137 of the main valvef30 to be controlled. When the 'valve 30 is open and the relative Vhumidit rises, as previously described, the va ve-stem 33 is eventually. moved downward from the upper position in' which it is shown-to its lower-position; in

Jwhich latter position it connects the pressure-supply pipe 131 to the pipe 133 leading to the upper `end of'the cylinder 135 and connects vt e ipe 134 from the lower .en d of such cylinder to the waste pipe 132, so that the Ifluid-pressure will force the piston 136 downward from the position shown to close the main valve 30 and thus cut oiz the supply of humidifying steam. As the relative humidity now falls, as previously described, the valve stem 33 isl eventually moved to its upper position; yin which position -it reverses the connections from the pipes 131 and 132 to the pipes 133 and 134 from those just described, to make the connections the drawing shows and admits pressure to the lower'end of the cylinder 135 while allowing the fluid to waste from the upper end of such cylinder, so that the piston 136 will move upward to open the main valve 30 to admit humidifying steam to cause thel relative humidity again to increase.

I claim as my invention:

1. In combination, a 'shiftable controllin member, an actuating member therefor, an a floating spring-collapsed toggle acting on said controlling member and collapsible on I either side of alined position to tend to move the controlling member toward either of its end positions, said toggle being substantially free from outside lateral pressure and reaction and capable 'of a limited opening movement from either of its collapsed positions without changing the position of said controlling member.

2. In combination, a shiftable controlling member, an actuating member therefor, a floating spring-collapsed toggle actin on said controllin member and colla )sib e on eithe'r side'of a ined position to tend to move the vcontrolling member toward either of its end positions, a lost-motion connection between said actuating member and said controlling member,fand a connection between an arm ofsaid toggle and said actuating member for moving that toggle-.arm toward alinement withy the other toggle-arm as the actuating member moves to take up the lostmotion of its connection with the controlling member.

3. The combination set forth in claim 1, with the addition oi' automatic operating means for said actuating member, said automatic means being affected by Variations in conditions controlled by said controlling member.

4. In combination, a shiftable controlling member, an actuating member therefor, a floating spring-collapsed toggle acting on said controlling member and collapsible on either side of alined position to tend to move the controlling member toward either of itsy end positions, a lost-motion connection between said actuating member and said controlling member, a connection between an arm of said toggle and said actuating member for moving that toggle-arm toward alinementwith the other toggle-arm as the p actuating member moves to take up the lostmotion of its connection with the controlling member, and vautomatic operating 'means for said actuating member, said automatic means being aflected'by variations in conditions controlled by said controlling member.

5. In combination, a shiftable controlling member, an actuating member therefor` a floating spring-collapsed toggle acting on said-controlling member and collapsible on either side of alined position to tend to move the controlling member toward either of its end positions, a weight-carrying arm associated with said actuating member and movable through` a horizontal ,position to oppositely inclined positions, and al shifting v weight carried by said weight-carrying arm.

6. In combination, a shiftable controlling member, an actuating member therefor, a floating spring-collapsed toggle acting on said controlling member and collapsible on either Side of alined position tov tend" to move the controlling member toward either of its end positions, a lost-motion connection between said actuating member and said controlling member, a connection between an arm ofsaid toggle and said actuating member for moving .that toggle-arm toward alinement with the other toggle-arm as' the actuating member moves totake up the lostmotion of its connection with the controlling member, a weight-carrying arm associated with said actuating member and movable through a horizontal position to oppositely inclined positions, and a shifting weight 'i carried by said weight-carrying arm.

7. I n combinatioma shiftable controlling member` an actuating member therefor, a

floating spring-collapsed toggle acting on said controllin member and collapsible on ,either side of a ined position to tend to move the controlling member toward either of its actuating member moves to take'up the end positions, automatic operating means for said actuating member, said automatic means being affected by variations in conditions controlled by said controlling member, a weight-carrying arm associated with said actuating member and movable through a horizontal position to oppositely inclined positions, and a shifting weight carried by said weight-carrying arm.

8. In combination, a shiftable controlling member, an actuating member therefor, a floating spring-collapsed toggle acting on said controlling member and collapsible on either side of'alined position to tend to move the controlling member toward either of its end positions, a lost-motion connection between said actuating member and said controlling member, a connection between an arm of said toggle and said actuating member for moving that toggle-arm toward alinement with the other toggle-arm as the lost-motion of its connection with the conv trolling member, automatic operating means for said actuating member, said automatic means being affected by variations in conditions controlled bysaid controlling'member, a Weight-carrying arm associated with said actuating member and movable through a horizontal position to oppositely inclined positions, and al shifting weight carried by said weight-carrying arm.

9. In combination, a controlling member, an actuating member connected to said controlling member through a lost-motion connection, automatic operating-means for said actuating member, said automatic operating means being affected by variations in conditions controlled by said controlling member,

means associated with said actuating meinber and exerting a force thereon tending to .movek it, said force-exerting means being arranged to produce a variation in said force when the actuating member passes 'through a predetermined position, and means associated with said controllin member and exerting a force thereon ten ing to move it,' sald second force-exerting means being arranged to reverse the direction in whichit applies its force on said controlling member as the actuating member acts on said controlling member. u

- 10.- In combination, a controlling member,

i an actuating member connected to said con- 55.

trolling member through a lost-motion connection, automatic operating means for said actuatingmember, said automatic operating means being ai'ected by variations, in condltions controlled by said controlling member a Weight-.carrying arm associated with said actuating member and arranged to swing through. ahorizontalposition to o'ppositely inclined positions as the actuating member moves, a shifting weight carried by saidactuating arm and arranged to shift to dif'- lsaid .force whenA the actuatin ferent positions thereon when the arm passes through the horizontal position and thus to vary the` mechanical advantage of said weight, and means acting on said controlling member and tending to hold it in either end position it may occupy. v

11. In combination, a controlling member, an actuating memberconnected to said controlling member through-a lost-motion connection, automatic operating means for said actuating member, said automatic operating means being aifected by variations in conditions controlled by said controlling member, aVWeight-carrymg arm associated with said actuating member and arranged to swing through a horizontal position to oppositely inclined positions as the actuating member moves, a shifting weight carried by said actuating arm and arranged to shift to different positions thereon. when thearm passes through the horizontal position and thusto vary the mechanical advantage of said weight, and spring-pressed means acting on said controlling member and tending to hold it in an end position.

12. The combination set forth in claim 11, with the addition of means interconnecting said actuating member and said springmeans for varying the eect of the latter as the lost-motion is taken up between said actuating member and said controlling member. v

13. In combination, a controlling member, an actuating member connected to said controlling member through a lost-motion`con nection, automatic operating'means for said actuating member, said automatic operating means being alfected by variations in' conditionsl controlled `by said controlling member, means associated with said actuatin member and exertin a force thereon ten ing to move it, sai Vforce-exerting means being arranged to produce a variation in member passes through a predetermine position, means associated with said controlling member and exerting a force thereon tending to move 1t, and means interconnecting said actuating member and said second force exerting means for varying the eifect of the latter as the lost-motion is taken up between said actuating member and saidl controllingations in conditions controlled by said 'control valve, a pair of tog le-arms both pivotally connected "i sal valve stem, said toggle-arms being supported' on oating pivots, a spring interconnecting said toggle arxnsand tending -to move them out'of alined posltion, and means operated by movements of said actuating member for shifting the floating pivot of one of said toggle-arlns.i 15'. The combination set forth in claim 14, with the addition of alost-motionfcom nection between said actuating'. member'a said valve stein. y t

16. The combinationff'set forth in y,

1-1, with the addition *of ,aweight-carrylng marin which is connectedf'to said actuating member and 1s arrangedfto swmg'through a horizontal position to oppositely inclined lpositions as the actuatingmemberV moyes` and a shiftlng weight carried by saidwe1ghtcarry1ng arm and arranged,

izontfal position to oppostelv inclinedvpo'sitions Aas the actuating mem er moves, and

en said 'actuating' mmberand ,Y said valve stem a -I weight-carrying which" `isfconnected to said actuatingfmelib berfandis arranged to swing througha hor-L Aa shifting weight carried by said weightcarryin arm and arranged to shift thereon when tie welght-carrying arm passes1 lts d l horizontal position and thus to vary the meivf chanical advantage of such weight.

18. Inj combination, ya shiftable control-V A:ling member having an actuating rod, a

pivotally mounted fulcrum sleeve pivotally connected 'to said actuating rod, a lever arm .pivotally mounted in said sleeve, adjusting means for angularly adjusting` said lever arm in said sleeve, and a shitinv carried by said lever arm vand shitable by gravity therealongwhen the inclination of lsaid lever arm is reversed.

` 19.The combination set forth in claim 18 #with the addition of two sets of supports for said fulcrum sleeve on opposite sides of said actuating rod to permit the reversal of the mounting of said sleeve.

"In, `witness whereof, I. have hereunto set Inyhandat Indianapolis, Indiana, this 19th day-of October, A. D. one thousandninef hundred ,and twenty three.

weight 

